/**
 * Copyright 2020 jianggujin (www.jianggujin.com).
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *  
 *      http://www.apache.org/licenses/LICENSE-2.0
 *  
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.jianggujin.dbfly.mybatis.constant;

import java.util.Locale;

/**
 * 排序策略
 * 
 * @author jianggujin
 *
 */
public enum JOrderStrategy {
    ASC, DESC;

    public boolean isAscending() {
        return this.equals(ASC);
    }

    public boolean isDescending() {
        return this.equals(DESC);
    }

    public static JOrderStrategy fromString(String value) {
        try {
            return JOrderStrategy.valueOf(value.toUpperCase(Locale.US));
        } catch (Exception e) {
            throw new IllegalArgumentException(String.format(
                    "Invalid value '%s' for orders given! Has to be either 'desc' or 'asc' (case insensitive).", value),
                    e);
        }
    }

    public static JOrderStrategy fromOptionalString(String value) {
        try {
            return fromString(value);
        } catch (IllegalArgumentException e) {
            return null;
        }
    }
}
